Off-campus UNL users: To download campus access dissertations, please use the following link to log into our proxy server with your NU ID and password. When you are done browsing please remember to return to this page and log out.
Non-UNL users: Please talk to your librarian about requesting this dissertation through interlibrary loan.
INTERACTIONS OF DIETARY VITAMINS, MINERALS AND FAT LEVELS IN POULTRY
Abstract
Three experiments were conducted with broiler chicks and turkey poults to evaluate the effect of dietary fat on vitamin A utilization. Results of these experiments indicated a significant increase in liver vitamin A with increasing fat up to a moderate level (3 to 4.5%) and a significant increase in liver vitamin A with increasing dietary vitamin A. A fourth experiment was conducted with broiler chicks to examine the effect of dietary fat on vitamin E utilization. Results indicated: a significant increase in plasma vitamin E with increasing vitamin E or fat up to moderate levels (3 to 4.5%); a significant decrease in plasma vitamin A with vitamin E levels; and a significant fat x vitamin E interaction. A fifth experiment was conducted with turkey poults to examine the effect of dietary fat on utilization of mineral elements. Results indicated that increasing fat levels significantly depressed plasma Cu, decreased Cu excretion, improved Cu retention, increased Ca excretion, decreased P excretion and decreased Ca and Mg retention. Increasing trace mineral levels significantly increased plasma Zn and the excretion of Zn and Cu. A sixth experiment was conducted to investigate possible interactions among fat-soluble vitamins. Eighty-one dietary treatments were involved in a 3 x 3 x 3 x 3 factorial arrangement. The following main effects and interactions were statistically significant: Effect of vitamin A on feed efficiency, plasma vitamin A and E; Effect of vitamin D on weight gain and mortality; Effect of vitamin E on plasma A and E; Effect of A x D interaction on weight gain and plasma E; Effect of D x K interaction on feed efficiency; Effect of A x D x E interaction on plasma vitamin E concentration. Data from this study indicated that with levels of vitamins A and E currently employed, higher levels of vitamin D and K would result in improved performance. A seventh experiment was conducted to investigate the effect of supplemental B-vitamins on performance of laying hens fed a simple corn-soybean meal diet. Results indicated that supplemental riboflavin in the diet of laying hens significantly increased egg weight.
Subject Area
Livestock
Recommended Citation
ABAWI, FAROUQ GHULAM, "INTERACTIONS OF DIETARY VITAMINS, MINERALS AND FAT LEVELS IN POULTRY" (1984). ETD collection for University of Nebraska-Lincoln. AAI8423754.
https://digitalcommons.unl.edu/dissertations/AAI8423754